Thermal transfer image receiving sheet

Info

Patent number: 5958834
Type: Grant
Filed: Jan 30, 1998
Date of Patent: Sep 28, 1999
Assignee: Dai Nippon Printing Co., Ltd. (Tokyo-to)
Inventors: Masayasu Yamazaki (Tokyo-to), Mineo Yamauchi (Tokyo-to)
Primary Examiner: Bruce H. Hess
Law Firm: Ladas & Parry
Application Number: 9/16,502

Abstract

A thermal transfer image receiving sheet comprises a substrate sheet and a receptor layer disposed on at least one surface of the substrate sheet, wherein the thermal transfer image receiving sheet contains sulfonated polyaniline as an antistatic agent. The sulfonated polyaniline may be contained in the receptor layer or another layer additionally formed on a front or back surface side of the thermal transfer image receiving sheet.

Claims

1. A thermal transfer image receiving sheet comprising a substrate sheet and a receptor layer disposed on at least one surface of the substrate sheet, wherein the thermal transfer image receiving sheet contains sulfonated polyaniline as an antistatic agent.

2. A thermal transfer image receiving sheet as claimed in claim 1, wherein said sulfonated polyaniline is contained in said receptor layer.

3. A thermal transfer image receiving sheet as claimed in claim 2, wherein said sulfonated polyaniline is contained in a ratio of 0.1 to 10 weight parts of said sulfonated polyaniline to 100 weight parts of a binder resin for said receptor layer.

4. A thermal transfer image receiving sheet as claimed in claim 1, wherein an antistatic layer is further disposed between said substrate sheet and said receptor layer, and said sulfonated polyaniline is contained in said antistatic layer.

5. A thermal transfer image receiving sheet as claimed in claim 4, wherein said antistatic layer is formed by applying a coating liquid for an antistatic layer comprising 2 to 10 wt. % of a binder resin for an antistatic layer, 0.1 to 5 wt. % of said sulfonated polyaniline, and a solvent as a balance on said substrate sheet, and drying same.

6. A thermal transfer image receiving sheet as claimed in claim 5, wherein said coating liquid for an antistatic layer further comprises up to 2 wt. % of a surface active agent.

7. A thermal transfer image receiving sheet as claimed in claim 1, wherein a back surface layer is further disposed on an opposite surface of said substrate sheet on which said receptor layer is formed, and said sulfonated polyaniline is contained in said back surface layer.

8. A thermal transfer image receiving sheet as claimed in claim 7, wherein said sulfonated polyaniline is contained in a ratio of 0.1 to 10 weight parts of said sulfonated polyaniline to 100 weight parts of a binder resin for said back surface layer.

9. A thermal transfer image receiving sheet as claimed in claim 1, wherein an antistatic layer and a back surface layer are further disposed on an opposite surface of said substrate sheet on which said receptor layer is formed, in order from said substrate sheet, and said sulfonated polyaniline is contained in said antistatic layer.

10. A thermal transfer image receiving sheet as claimed in claim 9, wherein said antistatic layer is formed by applying a coating liquid for an antistatic layer comprising 2 to 10 wt. % of a binder resin for an antistatic layer, 0.1 to 5 wt. % of said sulfonated polyaniline, and a solvent as a balance on said substrate sheet, and drying same.

11. A thermal transfer image receiving sheet as claimed in claim 10, wherein said coating liquid for an antistatic layer further comprises up to 2 wt. % of a surface active agent.